1537A. Arithmetic Array
void solve() {int n; cin >> n;int sum = 0;for (int i = 0, x; i < n; ++i)cin >> x, sum += x;cout << (sum >= n ? sum - n : 1) << '\n';}
for s in[*open(0)][2::2]:print(abs(min(1,len(a:=s.split())-sum(map(int,a)))))
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